sound/soc/codecs/da7219-aad.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * da7219-aad.c - Dialog DA7219 ALSA SoC AAD Driver
   4  *
   5  * Copyright (c) 2015 Dialog Semiconductor Ltd.
   6  *
   7  * Author: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/clk.h>
  13 #include <linux/i2c.h>
  14 #include <linux/property.h>
  15 #include <linux/pm_wakeirq.h>
  16 #include <linux/slab.h>
  17 #include <linux/delay.h>
  18 #include <linux/workqueue.h>
  19 #include <sound/soc.h>
  20 #include <sound/jack.h>
  21 #include <sound/da7219.h>
  22
  23 #include "da7219.h"
  24 #include "da7219-aad.h"
  25
  26
  27 /*
  28  * Detection control
  29  */
  30
  31 void da7219_aad_jack_det(struct snd_soc_component *component, struct snd_soc_jack *jack)
  32 {
  33         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
  34
  35         da7219->aad->jack = jack;
  36         da7219->aad->jack_inserted = false;
  37
  38         /* Send an initial empty report */
  39         snd_soc_jack_report(jack, 0, DA7219_AAD_REPORT_ALL_MASK);
  40
  41         /* Enable/Disable jack detection */
  42         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
  43                             DA7219_ACCDET_EN_MASK,
  44                             (jack ? DA7219_ACCDET_EN_MASK : 0));
  45 }
  46 EXPORT_SYMBOL_GPL(da7219_aad_jack_det);
  47
  48 /*
  49  * Button/HPTest work
  50  */
  51
  52 static void da7219_aad_btn_det_work(struct work_struct *work)
  53 {
  54         struct da7219_aad_priv *da7219_aad =
  55                 container_of(work, struct da7219_aad_priv, btn_det_work);
  56         struct snd_soc_component *component = da7219_aad->component;
  57         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
  58         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
  59         u8 statusa, micbias_ctrl;
  60         bool micbias_up = false;
  61         int retries = 0;
  62
  63         /* Disable ground switch */
  64         snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00);
  65
  66         /* Drive headphones/lineout */
  67         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
  68                             DA7219_HP_L_AMP_OE_MASK,
  69                             DA7219_HP_L_AMP_OE_MASK);
  70         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
  71                             DA7219_HP_R_AMP_OE_MASK,
  72                             DA7219_HP_R_AMP_OE_MASK);
  73
  74         /* Make sure mic bias is up */
  75         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
  76         snd_soc_dapm_sync(dapm);
  77
  78         do {
  79                 statusa = snd_soc_component_read(component, DA7219_ACCDET_STATUS_A);
  80                 if (statusa & DA7219_MICBIAS_UP_STS_MASK)
  81                         micbias_up = true;
  82                 else if (retries++ < DA7219_AAD_MICBIAS_CHK_RETRIES)
  83                         msleep(DA7219_AAD_MICBIAS_CHK_DELAY);
  84         } while ((!micbias_up) && (retries < DA7219_AAD_MICBIAS_CHK_RETRIES));
  85
  86         if (retries >= DA7219_AAD_MICBIAS_CHK_RETRIES)
  87                 dev_warn(component->dev, "Mic bias status check timed out");
  88
  89         da7219->micbias_on_event = true;
  90
  91         /*
  92          * Mic bias pulse required to enable mic, must be done before enabling
  93          * button detection to prevent erroneous button readings.
  94          */
  95         if (da7219_aad->micbias_pulse_lvl && da7219_aad->micbias_pulse_time) {
  96                 /* Pulse higher level voltage */
  97                 micbias_ctrl = snd_soc_component_read(component, DA7219_MICBIAS_CTRL);
  98                 snd_soc_component_update_bits(component, DA7219_MICBIAS_CTRL,
  99                                     DA7219_MICBIAS1_LEVEL_MASK,
 100                                     da7219_aad->micbias_pulse_lvl);
 101                 msleep(da7219_aad->micbias_pulse_time);
 102                 snd_soc_component_write(component, DA7219_MICBIAS_CTRL, micbias_ctrl);
 103
 104         }
 105
 106         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
 107                             DA7219_BUTTON_CONFIG_MASK,
 108                             da7219_aad->btn_cfg);
 109 }
 110
 111 static void da7219_aad_hptest_work(struct work_struct *work)
 112 {
 113         struct da7219_aad_priv *da7219_aad =
 114                 container_of(work, struct da7219_aad_priv, hptest_work);
 115         struct snd_soc_component *component = da7219_aad->component;
 116         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 117         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
 118
 119         __le16 tonegen_freq_hptest;
 120         u8 pll_srm_sts, pll_ctrl, gain_ramp_ctrl, accdet_cfg8;
 121         int report = 0, ret;
 122
 123         /* Lock DAPM, Kcontrols affected by this test and the PLL */
 124         snd_soc_dapm_mutex_lock(dapm);
 125         mutex_lock(&da7219->ctrl_lock);
 126         mutex_lock(&da7219->pll_lock);
 127
 128         /* Ensure MCLK is available for HP test procedure */
 129         if (da7219->mclk) {
 130                 ret = clk_prepare_enable(da7219->mclk);
 131                 if (ret) {
 132                         dev_err(component->dev, "Failed to enable mclk - %d\n", ret);
 133                         mutex_unlock(&da7219->pll_lock);
 134                         mutex_unlock(&da7219->ctrl_lock);
 135                         snd_soc_dapm_mutex_unlock(dapm);
 136                         return;
 137                 }
 138         }
 139
 140         /*
 141          * If MCLK not present, then we're using the internal oscillator and
 142          * require different frequency settings to achieve the same result.
 143          *
 144          * If MCLK is present, but PLL is not enabled then we enable it here to
 145          * ensure a consistent detection procedure.
 146          */
 147         pll_srm_sts = snd_soc_component_read(component, DA7219_PLL_SRM_STS);
 148         if (pll_srm_sts & DA7219_PLL_SRM_STS_MCLK) {
 149                 tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ);
 150
 151                 pll_ctrl = snd_soc_component_read(component, DA7219_PLL_CTRL);
 152                 if ((pll_ctrl & DA7219_PLL_MODE_MASK) == DA7219_PLL_MODE_BYPASS)
 153                         da7219_set_pll(component, DA7219_SYSCLK_PLL,
 154                                        DA7219_PLL_FREQ_OUT_98304);
 155         } else {
 156                 tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ_INT_OSC);
 157         }
 158
 159         /* Disable ground switch */
 160         snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00);
 161
 162         /* Ensure gain ramping at fastest rate */
 163         gain_ramp_ctrl = snd_soc_component_read(component, DA7219_GAIN_RAMP_CTRL);
 164         snd_soc_component_write(component, DA7219_GAIN_RAMP_CTRL, DA7219_GAIN_RAMP_RATE_X8);
 165
 166         /* Bypass cache so it saves current settings */
 167         regcache_cache_bypass(da7219->regmap, true);
 168
 169         /* Make sure Tone Generator is disabled */
 170         snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, 0);
 171
 172         /* Enable HPTest block, 1KOhms check */
 173         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_8,
 174                             DA7219_HPTEST_EN_MASK | DA7219_HPTEST_RES_SEL_MASK,
 175                             DA7219_HPTEST_EN_MASK |
 176                             DA7219_HPTEST_RES_SEL_1KOHMS);
 177
 178         /* Set gains to 0db */
 179         snd_soc_component_write(component, DA7219_DAC_L_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
 180         snd_soc_component_write(component, DA7219_DAC_R_GAIN, DA7219_DAC_DIGITAL_GAIN_0DB);
 181         snd_soc_component_write(component, DA7219_HP_L_GAIN, DA7219_HP_AMP_GAIN_0DB);
 182         snd_soc_component_write(component, DA7219_HP_R_GAIN, DA7219_HP_AMP_GAIN_0DB);
 183
 184         /* Disable DAC filters, EQs and soft mute */
 185         snd_soc_component_update_bits(component, DA7219_DAC_FILTERS1, DA7219_HPF_MODE_MASK,
 186                             0);
 187         snd_soc_component_update_bits(component, DA7219_DAC_FILTERS4, DA7219_DAC_EQ_EN_MASK,
 188                             0);
 189         snd_soc_component_update_bits(component, DA7219_DAC_FILTERS5,
 190                             DA7219_DAC_SOFTMUTE_EN_MASK, 0);
 191
 192         /* Enable HP left & right paths */
 193         snd_soc_component_update_bits(component, DA7219_CP_CTRL, DA7219_CP_EN_MASK,
 194                             DA7219_CP_EN_MASK);
 195         snd_soc_component_update_bits(component, DA7219_DIG_ROUTING_DAC,
 196                             DA7219_DAC_L_SRC_MASK | DA7219_DAC_R_SRC_MASK,
 197                             DA7219_DAC_L_SRC_TONEGEN |
 198                             DA7219_DAC_R_SRC_TONEGEN);
 199         snd_soc_component_update_bits(component, DA7219_DAC_L_CTRL,
 200                             DA7219_DAC_L_EN_MASK | DA7219_DAC_L_MUTE_EN_MASK,
 201                             DA7219_DAC_L_EN_MASK);
 202         snd_soc_component_update_bits(component, DA7219_DAC_R_CTRL,
 203                             DA7219_DAC_R_EN_MASK | DA7219_DAC_R_MUTE_EN_MASK,
 204                             DA7219_DAC_R_EN_MASK);
 205         snd_soc_component_update_bits(component, DA7219_MIXOUT_L_SELECT,
 206                             DA7219_MIXOUT_L_MIX_SELECT_MASK,
 207                             DA7219_MIXOUT_L_MIX_SELECT_MASK);
 208         snd_soc_component_update_bits(component, DA7219_MIXOUT_R_SELECT,
 209                             DA7219_MIXOUT_R_MIX_SELECT_MASK,
 210                             DA7219_MIXOUT_R_MIX_SELECT_MASK);
 211         snd_soc_component_update_bits(component, DA7219_DROUTING_ST_OUTFILT_1L,
 212                             DA7219_OUTFILT_ST_1L_SRC_MASK,
 213                             DA7219_DMIX_ST_SRC_OUTFILT1L);
 214         snd_soc_component_update_bits(component, DA7219_DROUTING_ST_OUTFILT_1R,
 215                             DA7219_OUTFILT_ST_1R_SRC_MASK,
 216                             DA7219_DMIX_ST_SRC_OUTFILT1R);
 217         snd_soc_component_update_bits(component, DA7219_MIXOUT_L_CTRL,
 218                             DA7219_MIXOUT_L_AMP_EN_MASK,
 219                             DA7219_MIXOUT_L_AMP_EN_MASK);
 220         snd_soc_component_update_bits(component, DA7219_MIXOUT_R_CTRL,
 221                             DA7219_MIXOUT_R_AMP_EN_MASK,
 222                             DA7219_MIXOUT_R_AMP_EN_MASK);
 223         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
 224                             DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK,
 225                             DA7219_HP_L_AMP_OE_MASK | DA7219_HP_L_AMP_EN_MASK);
 226         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
 227                             DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK,
 228                             DA7219_HP_R_AMP_OE_MASK | DA7219_HP_R_AMP_EN_MASK);
 229         msleep(DA7219_SETTLING_DELAY);
 230         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
 231                             DA7219_HP_L_AMP_MUTE_EN_MASK |
 232                             DA7219_HP_L_AMP_MIN_GAIN_EN_MASK, 0);
 233         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
 234                             DA7219_HP_R_AMP_MUTE_EN_MASK |
 235                             DA7219_HP_R_AMP_MIN_GAIN_EN_MASK, 0);
 236
 237         /*
 238          * If we're running from the internal oscillator then give audio paths
 239          * time to settle before running test.
 240          */
 241         if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
 242                 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
 243
 244         /* Configure & start Tone Generator */
 245         snd_soc_component_write(component, DA7219_TONE_GEN_ON_PER, DA7219_BEEP_ON_PER_MASK);
 246         regmap_raw_write(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
 247                          &tonegen_freq_hptest, sizeof(tonegen_freq_hptest));
 248         snd_soc_component_update_bits(component, DA7219_TONE_GEN_CFG2,
 249                             DA7219_SWG_SEL_MASK | DA7219_TONE_GEN_GAIN_MASK,
 250                             DA7219_SWG_SEL_SRAMP |
 251                             DA7219_TONE_GEN_GAIN_MINUS_15DB);
 252         snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, DA7219_START_STOPN_MASK);
 253
 254         msleep(DA7219_AAD_HPTEST_PERIOD);
 255
 256         /* Grab comparator reading */
 257         accdet_cfg8 = snd_soc_component_read(component, DA7219_ACCDET_CONFIG_8);
 258         if (accdet_cfg8 & DA7219_HPTEST_COMP_MASK)
 259                 report |= SND_JACK_HEADPHONE;
 260         else
 261                 report |= SND_JACK_LINEOUT;
 262
 263         /* Stop tone generator */
 264         snd_soc_component_write(component, DA7219_TONE_GEN_CFG1, 0);
 265
 266         msleep(DA7219_AAD_HPTEST_PERIOD);
 267
 268         /* Restore original settings from cache */
 269         regcache_mark_dirty(da7219->regmap);
 270         regcache_sync_region(da7219->regmap, DA7219_HP_L_CTRL,
 271                              DA7219_HP_R_CTRL);
 272         msleep(DA7219_SETTLING_DELAY);
 273         regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_CTRL,
 274                              DA7219_MIXOUT_R_CTRL);
 275         regcache_sync_region(da7219->regmap, DA7219_DROUTING_ST_OUTFILT_1L,
 276                              DA7219_DROUTING_ST_OUTFILT_1R);
 277         regcache_sync_region(da7219->regmap, DA7219_MIXOUT_L_SELECT,
 278                              DA7219_MIXOUT_R_SELECT);
 279         regcache_sync_region(da7219->regmap, DA7219_DAC_L_CTRL,
 280                              DA7219_DAC_R_CTRL);
 281         regcache_sync_region(da7219->regmap, DA7219_DIG_ROUTING_DAC,
 282                              DA7219_DIG_ROUTING_DAC);
 283         regcache_sync_region(da7219->regmap, DA7219_CP_CTRL, DA7219_CP_CTRL);
 284         regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS5,
 285                              DA7219_DAC_FILTERS5);
 286         regcache_sync_region(da7219->regmap, DA7219_DAC_FILTERS4,
 287                              DA7219_DAC_FILTERS1);
 288         regcache_sync_region(da7219->regmap, DA7219_HP_L_GAIN,
 289                              DA7219_HP_R_GAIN);
 290         regcache_sync_region(da7219->regmap, DA7219_DAC_L_GAIN,
 291                              DA7219_DAC_R_GAIN);
 292         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_ON_PER,
 293                              DA7219_TONE_GEN_ON_PER);
 294         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_FREQ1_L,
 295                              DA7219_TONE_GEN_FREQ1_U);
 296         regcache_sync_region(da7219->regmap, DA7219_TONE_GEN_CFG1,
 297                              DA7219_TONE_GEN_CFG2);
 298
 299         regcache_cache_bypass(da7219->regmap, false);
 300
 301         /* Disable HPTest block */
 302         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_8,
 303                             DA7219_HPTEST_EN_MASK, 0);
 304
 305         /*
 306          * If we're running from the internal oscillator then give audio paths
 307          * time to settle before allowing headphones to be driven as required.
 308          */
 309         if (!(pll_srm_sts & DA7219_PLL_SRM_STS_MCLK))
 310                 msleep(DA7219_AAD_HPTEST_INT_OSC_PATH_DELAY);
 311
 312         /* Restore gain ramping rate */
 313         snd_soc_component_write(component, DA7219_GAIN_RAMP_CTRL, gain_ramp_ctrl);
 314
 315         /* Drive Headphones/lineout */
 316         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL, DA7219_HP_L_AMP_OE_MASK,
 317                             DA7219_HP_L_AMP_OE_MASK);
 318         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL, DA7219_HP_R_AMP_OE_MASK,
 319                             DA7219_HP_R_AMP_OE_MASK);
 320
 321         /* Restore PLL to previous configuration, if re-configured */
 322         if ((pll_srm_sts & DA7219_PLL_SRM_STS_MCLK) &&
 323             ((pll_ctrl & DA7219_PLL_MODE_MASK) == DA7219_PLL_MODE_BYPASS))
 324                 da7219_set_pll(component, DA7219_SYSCLK_MCLK, 0);
 325
 326         /* Remove MCLK, if previously enabled */
 327         if (da7219->mclk)
 328                 clk_disable_unprepare(da7219->mclk);
 329
 330         mutex_unlock(&da7219->pll_lock);
 331         mutex_unlock(&da7219->ctrl_lock);
 332         snd_soc_dapm_mutex_unlock(dapm);
 333
 334         /*
 335          * Only send report if jack hasn't been removed during process,
 336          * otherwise it's invalid and we drop it.
 337          */
 338         if (da7219_aad->jack_inserted)
 339                 snd_soc_jack_report(da7219_aad->jack, report,
 340                                     SND_JACK_HEADSET | SND_JACK_LINEOUT);
 341 }
 342
 343
 344 /*
 345  * IRQ
 346  */
 347
 348 static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
 349 {
 350         struct da7219_aad_priv *da7219_aad = data;
 351         struct snd_soc_component *component = da7219_aad->component;
 352         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 353         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
 354         u8 events[DA7219_AAD_IRQ_REG_MAX];
 355         u8 statusa;
 356         int i, report = 0, mask = 0;
 357
 358         /* Read current IRQ events */
 359         regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
 360                          events, DA7219_AAD_IRQ_REG_MAX);
 361
 362         if (!events[DA7219_AAD_IRQ_REG_A] && !events[DA7219_AAD_IRQ_REG_B])
 363                 return IRQ_NONE;
 364
 365         /* Read status register for jack insertion & type status */
 366         statusa = snd_soc_component_read(component, DA7219_ACCDET_STATUS_A);
 367
 368         /* Clear events */
 369         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A,
 370                           events, DA7219_AAD_IRQ_REG_MAX);
 371
 372         dev_dbg(component->dev, "IRQ events = 0x%x|0x%x, status = 0x%x\n",
 373                 events[DA7219_AAD_IRQ_REG_A], events[DA7219_AAD_IRQ_REG_B],
 374                 statusa);
 375
 376         if (statusa & DA7219_JACK_INSERTION_STS_MASK) {
 377                 /* Jack Insertion */
 378                 if (events[DA7219_AAD_IRQ_REG_A] &
 379                     DA7219_E_JACK_INSERTED_MASK) {
 380                         report |= SND_JACK_MECHANICAL;
 381                         mask |= SND_JACK_MECHANICAL;
 382                         da7219_aad->jack_inserted = true;
 383                 }
 384
 385                 /* Jack type detection */
 386                 if (events[DA7219_AAD_IRQ_REG_A] &
 387                     DA7219_E_JACK_DETECT_COMPLETE_MASK) {
 388                         /*
 389                          * If 4-pole, then enable button detection, else perform
 390                          * HP impedance test to determine output type to report.
 391                          *
 392                          * We schedule work here as the tasks themselves can
 393                          * take time to complete, and in particular for hptest
 394                          * we want to be able to check if the jack was removed
 395                          * during the procedure as this will invalidate the
 396                          * result. By doing this as work, the IRQ thread can
 397                          * handle a removal, and we can check at the end of
 398                          * hptest if we have a valid result or not.
 399                          */
 400                         if (statusa & DA7219_JACK_TYPE_STS_MASK) {
 401                                 report |= SND_JACK_HEADSET;
 402                                 mask |= SND_JACK_HEADSET | SND_JACK_LINEOUT;
 403                                 schedule_work(&da7219_aad->btn_det_work);
 404                         } else {
 405                                 schedule_work(&da7219_aad->hptest_work);
 406                         }
 407                 }
 408
 409                 /* Button support for 4-pole jack */
 410                 if (statusa & DA7219_JACK_TYPE_STS_MASK) {
 411                         for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
 412                                 /* Button Press */
 413                                 if (events[DA7219_AAD_IRQ_REG_B] &
 414                                     (DA7219_E_BUTTON_A_PRESSED_MASK << i)) {
 415                                         report |= SND_JACK_BTN_0 >> i;
 416                                         mask |= SND_JACK_BTN_0 >> i;
 417                                 }
 418                         }
 419                         snd_soc_jack_report(da7219_aad->jack, report, mask);
 420
 421                         for (i = 0; i < DA7219_AAD_MAX_BUTTONS; ++i) {
 422                                 /* Button Release */
 423                                 if (events[DA7219_AAD_IRQ_REG_B] &
 424                                     (DA7219_E_BUTTON_A_RELEASED_MASK >> i)) {
 425                                         report &= ~(SND_JACK_BTN_0 >> i);
 426                                         mask |= SND_JACK_BTN_0 >> i;
 427                                 }
 428                         }
 429                 }
 430         } else {
 431                 /* Jack removal */
 432                 if (events[DA7219_AAD_IRQ_REG_A] & DA7219_E_JACK_REMOVED_MASK) {
 433                         report = 0;
 434                         mask |= DA7219_AAD_REPORT_ALL_MASK;
 435                         da7219_aad->jack_inserted = false;
 436
 437                         /* Cancel any pending work */
 438                         cancel_work_sync(&da7219_aad->btn_det_work);
 439                         cancel_work_sync(&da7219_aad->hptest_work);
 440
 441                         /* Un-drive headphones/lineout */
 442                         snd_soc_component_update_bits(component, DA7219_HP_R_CTRL,
 443                                             DA7219_HP_R_AMP_OE_MASK, 0);
 444                         snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
 445                                             DA7219_HP_L_AMP_OE_MASK, 0);
 446
 447                         /* Ensure button detection disabled */
 448                         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
 449                                             DA7219_BUTTON_CONFIG_MASK, 0);
 450
 451                         da7219->micbias_on_event = false;
 452
 453                         /* Disable mic bias */
 454                         snd_soc_dapm_disable_pin(dapm, "Mic Bias");
 455                         snd_soc_dapm_sync(dapm);
 456
 457                         /* Enable ground switch */
 458                         snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01);
 459                 }
 460         }
 461
 462         snd_soc_jack_report(da7219_aad->jack, report, mask);
 463
 464         return IRQ_HANDLED;
 465 }
 466
 467 /*
 468  * DT/ACPI to pdata conversion
 469  */
 470
 471 static enum da7219_aad_micbias_pulse_lvl
 472         da7219_aad_fw_micbias_pulse_lvl(struct device *dev, u32 val)
 473 {
 474         switch (val) {
 475         case 2800:
 476                 return DA7219_AAD_MICBIAS_PULSE_LVL_2_8V;
 477         case 2900:
 478                 return DA7219_AAD_MICBIAS_PULSE_LVL_2_9V;
 479         default:
 480                 dev_warn(dev, "Invalid micbias pulse level");
 481                 return DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
 482         }
 483 }
 484
 485 static enum da7219_aad_btn_cfg
 486         da7219_aad_fw_btn_cfg(struct device *dev, u32 val)
 487 {
 488         switch (val) {
 489         case 2:
 490                 return DA7219_AAD_BTN_CFG_2MS;
 491         case 5:
 492                 return DA7219_AAD_BTN_CFG_5MS;
 493         case 10:
 494                 return DA7219_AAD_BTN_CFG_10MS;
 495         case 50:
 496                 return DA7219_AAD_BTN_CFG_50MS;
 497         case 100:
 498                 return DA7219_AAD_BTN_CFG_100MS;
 499         case 200:
 500                 return DA7219_AAD_BTN_CFG_200MS;
 501         case 500:
 502                 return DA7219_AAD_BTN_CFG_500MS;
 503         default:
 504                 dev_warn(dev, "Invalid button config");
 505                 return DA7219_AAD_BTN_CFG_10MS;
 506         }
 507 }
 508
 509 static enum da7219_aad_mic_det_thr
 510         da7219_aad_fw_mic_det_thr(struct device *dev, u32 val)
 511 {
 512         switch (val) {
 513         case 200:
 514                 return DA7219_AAD_MIC_DET_THR_200_OHMS;
 515         case 500:
 516                 return DA7219_AAD_MIC_DET_THR_500_OHMS;
 517         case 750:
 518                 return DA7219_AAD_MIC_DET_THR_750_OHMS;
 519         case 1000:
 520                 return DA7219_AAD_MIC_DET_THR_1000_OHMS;
 521         default:
 522                 dev_warn(dev, "Invalid mic detect threshold");
 523                 return DA7219_AAD_MIC_DET_THR_500_OHMS;
 524         }
 525 }
 526
 527 static enum da7219_aad_jack_ins_deb
 528         da7219_aad_fw_jack_ins_deb(struct device *dev, u32 val)
 529 {
 530         switch (val) {
 531         case 5:
 532                 return DA7219_AAD_JACK_INS_DEB_5MS;
 533         case 10:
 534                 return DA7219_AAD_JACK_INS_DEB_10MS;
 535         case 20:
 536                 return DA7219_AAD_JACK_INS_DEB_20MS;
 537         case 50:
 538                 return DA7219_AAD_JACK_INS_DEB_50MS;
 539         case 100:
 540                 return DA7219_AAD_JACK_INS_DEB_100MS;
 541         case 200:
 542                 return DA7219_AAD_JACK_INS_DEB_200MS;
 543         case 500:
 544                 return DA7219_AAD_JACK_INS_DEB_500MS;
 545         case 1000:
 546                 return DA7219_AAD_JACK_INS_DEB_1S;
 547         default:
 548                 dev_warn(dev, "Invalid jack insert debounce");
 549                 return DA7219_AAD_JACK_INS_DEB_20MS;
 550         }
 551 }
 552
 553 static enum da7219_aad_jack_det_rate
 554         da7219_aad_fw_jack_det_rate(struct device *dev, const char *str)
 555 {
 556         if (!strcmp(str, "32ms_64ms")) {
 557                 return DA7219_AAD_JACK_DET_RATE_32_64MS;
 558         } else if (!strcmp(str, "64ms_128ms")) {
 559                 return DA7219_AAD_JACK_DET_RATE_64_128MS;
 560         } else if (!strcmp(str, "128ms_256ms")) {
 561                 return DA7219_AAD_JACK_DET_RATE_128_256MS;
 562         } else if (!strcmp(str, "256ms_512ms")) {
 563                 return DA7219_AAD_JACK_DET_RATE_256_512MS;
 564         } else {
 565                 dev_warn(dev, "Invalid jack detect rate");
 566                 return DA7219_AAD_JACK_DET_RATE_256_512MS;
 567         }
 568 }
 569
 570 static enum da7219_aad_jack_rem_deb
 571         da7219_aad_fw_jack_rem_deb(struct device *dev, u32 val)
 572 {
 573         switch (val) {
 574         case 1:
 575                 return DA7219_AAD_JACK_REM_DEB_1MS;
 576         case 5:
 577                 return DA7219_AAD_JACK_REM_DEB_5MS;
 578         case 10:
 579                 return DA7219_AAD_JACK_REM_DEB_10MS;
 580         case 20:
 581                 return DA7219_AAD_JACK_REM_DEB_20MS;
 582         default:
 583                 dev_warn(dev, "Invalid jack removal debounce");
 584                 return DA7219_AAD_JACK_REM_DEB_1MS;
 585         }
 586 }
 587
 588 static enum da7219_aad_btn_avg
 589         da7219_aad_fw_btn_avg(struct device *dev, u32 val)
 590 {
 591         switch (val) {
 592         case 1:
 593                 return DA7219_AAD_BTN_AVG_1;
 594         case 2:
 595                 return DA7219_AAD_BTN_AVG_2;
 596         case 4:
 597                 return DA7219_AAD_BTN_AVG_4;
 598         case 8:
 599                 return DA7219_AAD_BTN_AVG_8;
 600         default:
 601                 dev_warn(dev, "Invalid button average value");
 602                 return DA7219_AAD_BTN_AVG_2;
 603         }
 604 }
 605
 606 static enum da7219_aad_adc_1bit_rpt
 607         da7219_aad_fw_adc_1bit_rpt(struct device *dev, u32 val)
 608 {
 609         switch (val) {
 610         case 1:
 611                 return DA7219_AAD_ADC_1BIT_RPT_1;
 612         case 2:
 613                 return DA7219_AAD_ADC_1BIT_RPT_2;
 614         case 4:
 615                 return DA7219_AAD_ADC_1BIT_RPT_4;
 616         case 8:
 617                 return DA7219_AAD_ADC_1BIT_RPT_8;
 618         default:
 619                 dev_warn(dev, "Invalid ADC 1-bit repeat value");
 620                 return DA7219_AAD_ADC_1BIT_RPT_1;
 621         }
 622 }
 623
 624 static struct da7219_aad_pdata *da7219_aad_fw_to_pdata(struct device *dev)
 625 {
 626         struct i2c_client *i2c = to_i2c_client(dev);
 627         struct fwnode_handle *aad_np;
 628         struct da7219_aad_pdata *aad_pdata;
 629         const char *fw_str;
 630         u32 fw_val32;
 631
 632         aad_np = device_get_named_child_node(dev, "da7219_aad");
 633         if (!aad_np)
 634                 return NULL;
 635
 636         aad_pdata = devm_kzalloc(dev, sizeof(*aad_pdata), GFP_KERNEL);
 637         if (!aad_pdata)
 638                 return NULL;
 639
 640         aad_pdata->irq = i2c->irq;
 641
 642         if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-lvl",
 643                                      &fw_val32) >= 0)
 644                 aad_pdata->micbias_pulse_lvl =
 645                         da7219_aad_fw_micbias_pulse_lvl(dev, fw_val32);
 646         else
 647                 aad_pdata->micbias_pulse_lvl = DA7219_AAD_MICBIAS_PULSE_LVL_OFF;
 648
 649         if (fwnode_property_read_u32(aad_np, "dlg,micbias-pulse-time",
 650                                      &fw_val32) >= 0)
 651                 aad_pdata->micbias_pulse_time = fw_val32;
 652
 653         if (fwnode_property_read_u32(aad_np, "dlg,btn-cfg", &fw_val32) >= 0)
 654                 aad_pdata->btn_cfg = da7219_aad_fw_btn_cfg(dev, fw_val32);
 655         else
 656                 aad_pdata->btn_cfg = DA7219_AAD_BTN_CFG_10MS;
 657
 658         if (fwnode_property_read_u32(aad_np, "dlg,mic-det-thr", &fw_val32) >= 0)
 659                 aad_pdata->mic_det_thr =
 660                         da7219_aad_fw_mic_det_thr(dev, fw_val32);
 661         else
 662                 aad_pdata->mic_det_thr = DA7219_AAD_MIC_DET_THR_500_OHMS;
 663
 664         if (fwnode_property_read_u32(aad_np, "dlg,jack-ins-deb", &fw_val32) >= 0)
 665                 aad_pdata->jack_ins_deb =
 666                         da7219_aad_fw_jack_ins_deb(dev, fw_val32);
 667         else
 668                 aad_pdata->jack_ins_deb = DA7219_AAD_JACK_INS_DEB_20MS;
 669
 670         if (!fwnode_property_read_string(aad_np, "dlg,jack-det-rate", &fw_str))
 671                 aad_pdata->jack_det_rate =
 672                         da7219_aad_fw_jack_det_rate(dev, fw_str);
 673         else
 674                 aad_pdata->jack_det_rate = DA7219_AAD_JACK_DET_RATE_256_512MS;
 675
 676         if (fwnode_property_read_u32(aad_np, "dlg,jack-rem-deb", &fw_val32) >= 0)
 677                 aad_pdata->jack_rem_deb =
 678                         da7219_aad_fw_jack_rem_deb(dev, fw_val32);
 679         else
 680                 aad_pdata->jack_rem_deb = DA7219_AAD_JACK_REM_DEB_1MS;
 681
 682         if (fwnode_property_read_u32(aad_np, "dlg,a-d-btn-thr", &fw_val32) >= 0)
 683                 aad_pdata->a_d_btn_thr = (u8) fw_val32;
 684         else
 685                 aad_pdata->a_d_btn_thr = 0xA;
 686
 687         if (fwnode_property_read_u32(aad_np, "dlg,d-b-btn-thr", &fw_val32) >= 0)
 688                 aad_pdata->d_b_btn_thr = (u8) fw_val32;
 689         else
 690                 aad_pdata->d_b_btn_thr = 0x16;
 691
 692         if (fwnode_property_read_u32(aad_np, "dlg,b-c-btn-thr", &fw_val32) >= 0)
 693                 aad_pdata->b_c_btn_thr = (u8) fw_val32;
 694         else
 695                 aad_pdata->b_c_btn_thr = 0x21;
 696
 697         if (fwnode_property_read_u32(aad_np, "dlg,c-mic-btn-thr", &fw_val32) >= 0)
 698                 aad_pdata->c_mic_btn_thr = (u8) fw_val32;
 699         else
 700                 aad_pdata->c_mic_btn_thr = 0x3E;
 701
 702         if (fwnode_property_read_u32(aad_np, "dlg,btn-avg", &fw_val32) >= 0)
 703                 aad_pdata->btn_avg = da7219_aad_fw_btn_avg(dev, fw_val32);
 704         else
 705                 aad_pdata->btn_avg = DA7219_AAD_BTN_AVG_2;
 706
 707         if (fwnode_property_read_u32(aad_np, "dlg,adc-1bit-rpt", &fw_val32) >= 0)
 708                 aad_pdata->adc_1bit_rpt =
 709                         da7219_aad_fw_adc_1bit_rpt(dev, fw_val32);
 710         else
 711                 aad_pdata->adc_1bit_rpt = DA7219_AAD_ADC_1BIT_RPT_1;
 712
 713         return aad_pdata;
 714 }
 715
 716 static void da7219_aad_handle_pdata(struct snd_soc_component *component)
 717 {
 718         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
 719         struct da7219_aad_priv *da7219_aad = da7219->aad;
 720         struct da7219_pdata *pdata = da7219->pdata;
 721
 722         if ((pdata) && (pdata->aad_pdata)) {
 723                 struct da7219_aad_pdata *aad_pdata = pdata->aad_pdata;
 724                 u8 cfg, mask;
 725
 726                 da7219_aad->irq = aad_pdata->irq;
 727
 728                 switch (aad_pdata->micbias_pulse_lvl) {
 729                 case DA7219_AAD_MICBIAS_PULSE_LVL_2_8V:
 730                 case DA7219_AAD_MICBIAS_PULSE_LVL_2_9V:
 731                         da7219_aad->micbias_pulse_lvl =
 732                                 (aad_pdata->micbias_pulse_lvl <<
 733                                  DA7219_MICBIAS1_LEVEL_SHIFT);
 734                         break;
 735                 default:
 736                         break;
 737                 }
 738
 739                 da7219_aad->micbias_pulse_time = aad_pdata->micbias_pulse_time;
 740
 741                 switch (aad_pdata->btn_cfg) {
 742                 case DA7219_AAD_BTN_CFG_2MS:
 743                 case DA7219_AAD_BTN_CFG_5MS:
 744                 case DA7219_AAD_BTN_CFG_10MS:
 745                 case DA7219_AAD_BTN_CFG_50MS:
 746                 case DA7219_AAD_BTN_CFG_100MS:
 747                 case DA7219_AAD_BTN_CFG_200MS:
 748                 case DA7219_AAD_BTN_CFG_500MS:
 749                         da7219_aad->btn_cfg  = (aad_pdata->btn_cfg <<
 750                                                 DA7219_BUTTON_CONFIG_SHIFT);
 751                 }
 752
 753                 cfg = 0;
 754                 mask = 0;
 755                 switch (aad_pdata->mic_det_thr) {
 756                 case DA7219_AAD_MIC_DET_THR_200_OHMS:
 757                 case DA7219_AAD_MIC_DET_THR_500_OHMS:
 758                 case DA7219_AAD_MIC_DET_THR_750_OHMS:
 759                 case DA7219_AAD_MIC_DET_THR_1000_OHMS:
 760                         cfg |= (aad_pdata->mic_det_thr <<
 761                                 DA7219_MIC_DET_THRESH_SHIFT);
 762                         mask |= DA7219_MIC_DET_THRESH_MASK;
 763                 }
 764                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1, mask, cfg);
 765
 766                 cfg = 0;
 767                 mask = 0;
 768                 switch (aad_pdata->jack_ins_deb) {
 769                 case DA7219_AAD_JACK_INS_DEB_5MS:
 770                 case DA7219_AAD_JACK_INS_DEB_10MS:
 771                 case DA7219_AAD_JACK_INS_DEB_20MS:
 772                 case DA7219_AAD_JACK_INS_DEB_50MS:
 773                 case DA7219_AAD_JACK_INS_DEB_100MS:
 774                 case DA7219_AAD_JACK_INS_DEB_200MS:
 775                 case DA7219_AAD_JACK_INS_DEB_500MS:
 776                 case DA7219_AAD_JACK_INS_DEB_1S:
 777                         cfg |= (aad_pdata->jack_ins_deb <<
 778                                 DA7219_JACKDET_DEBOUNCE_SHIFT);
 779                         mask |= DA7219_JACKDET_DEBOUNCE_MASK;
 780                 }
 781                 switch (aad_pdata->jack_det_rate) {
 782                 case DA7219_AAD_JACK_DET_RATE_32_64MS:
 783                 case DA7219_AAD_JACK_DET_RATE_64_128MS:
 784                 case DA7219_AAD_JACK_DET_RATE_128_256MS:
 785                 case DA7219_AAD_JACK_DET_RATE_256_512MS:
 786                         cfg |= (aad_pdata->jack_det_rate <<
 787                                 DA7219_JACK_DETECT_RATE_SHIFT);
 788                         mask |= DA7219_JACK_DETECT_RATE_MASK;
 789                 }
 790                 switch (aad_pdata->jack_rem_deb) {
 791                 case DA7219_AAD_JACK_REM_DEB_1MS:
 792                 case DA7219_AAD_JACK_REM_DEB_5MS:
 793                 case DA7219_AAD_JACK_REM_DEB_10MS:
 794                 case DA7219_AAD_JACK_REM_DEB_20MS:
 795                         cfg |= (aad_pdata->jack_rem_deb <<
 796                                 DA7219_JACKDET_REM_DEB_SHIFT);
 797                         mask |= DA7219_JACKDET_REM_DEB_MASK;
 798                 }
 799                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_2, mask, cfg);
 800
 801                 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_3,
 802                               aad_pdata->a_d_btn_thr);
 803                 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_4,
 804                               aad_pdata->d_b_btn_thr);
 805                 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_5,
 806                               aad_pdata->b_c_btn_thr);
 807                 snd_soc_component_write(component, DA7219_ACCDET_CONFIG_6,
 808                               aad_pdata->c_mic_btn_thr);
 809
 810                 cfg = 0;
 811                 mask = 0;
 812                 switch (aad_pdata->btn_avg) {
 813                 case DA7219_AAD_BTN_AVG_1:
 814                 case DA7219_AAD_BTN_AVG_2:
 815                 case DA7219_AAD_BTN_AVG_4:
 816                 case DA7219_AAD_BTN_AVG_8:
 817                         cfg |= (aad_pdata->btn_avg <<
 818                                 DA7219_BUTTON_AVERAGE_SHIFT);
 819                         mask |= DA7219_BUTTON_AVERAGE_MASK;
 820                 }
 821                 switch (aad_pdata->adc_1bit_rpt) {
 822                 case DA7219_AAD_ADC_1BIT_RPT_1:
 823                 case DA7219_AAD_ADC_1BIT_RPT_2:
 824                 case DA7219_AAD_ADC_1BIT_RPT_4:
 825                 case DA7219_AAD_ADC_1BIT_RPT_8:
 826                         cfg |= (aad_pdata->adc_1bit_rpt <<
 827                                DA7219_ADC_1_BIT_REPEAT_SHIFT);
 828                         mask |= DA7219_ADC_1_BIT_REPEAT_MASK;
 829                 }
 830                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_7, mask, cfg);
 831         }
 832 }
 833
 834
 835 /*
 836  * Suspend/Resume
 837  */
 838
 839 void da7219_aad_suspend(struct snd_soc_component *component)
 840 {
 841         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
 842         struct da7219_aad_priv *da7219_aad = da7219->aad;
 843         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 844         u8 micbias_ctrl;
 845
 846         if (da7219_aad->jack) {
 847                 /* Disable jack detection during suspend */
 848                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
 849                                     DA7219_ACCDET_EN_MASK, 0);
 850
 851                 /*
 852                  * If we have a 4-pole jack inserted, then micbias will be
 853                  * enabled. We can disable micbias here, and keep a note to
 854                  * re-enable it on resume. If jack removal occurred during
 855                  * suspend then this will be dealt with through the IRQ handler.
 856                  */
 857                 if (da7219_aad->jack_inserted) {
 858                         micbias_ctrl = snd_soc_component_read(component, DA7219_MICBIAS_CTRL);
 859                         if (micbias_ctrl & DA7219_MICBIAS1_EN_MASK) {
 860                                 snd_soc_dapm_disable_pin(dapm, "Mic Bias");
 861                                 snd_soc_dapm_sync(dapm);
 862                                 da7219_aad->micbias_resume_enable = true;
 863                         }
 864                 }
 865         }
 866 }
 867
 868 void da7219_aad_resume(struct snd_soc_component *component)
 869 {
 870         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
 871         struct da7219_aad_priv *da7219_aad = da7219->aad;
 872         struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 873
 874         if (da7219_aad->jack) {
 875                 /* Re-enable micbias if previously enabled for 4-pole jack */
 876                 if (da7219_aad->jack_inserted &&
 877                     da7219_aad->micbias_resume_enable) {
 878                         snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
 879                         snd_soc_dapm_sync(dapm);
 880                         da7219_aad->micbias_resume_enable = false;
 881                 }
 882
 883                 /* Re-enable jack detection */
 884                 snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
 885                                     DA7219_ACCDET_EN_MASK,
 886                                     DA7219_ACCDET_EN_MASK);
 887         }
 888 }
 889
 890
 891 /*
 892  * Init/Exit
 893  */
 894
 895 int da7219_aad_init(struct snd_soc_component *component)
 896 {
 897         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
 898         struct da7219_aad_priv *da7219_aad = da7219->aad;
 899         u8 mask[DA7219_AAD_IRQ_REG_MAX];
 900         int ret;
 901
 902         da7219_aad->component = component;
 903
 904         /* Handle any DT/ACPI/platform data */
 905         da7219_aad_handle_pdata(component);
 906
 907         /* Disable button detection */
 908         snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
 909                             DA7219_BUTTON_CONFIG_MASK, 0);
 910
 911         /* Enable ground switch */
 912         snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01);
 913
 914         INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
 915         INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
 916
 917         ret = request_threaded_irq(da7219_aad->irq, NULL,
 918                                    da7219_aad_irq_thread,
 919                                    IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 920                                    "da7219-aad", da7219_aad);
 921         if (ret) {
 922                 dev_err(component->dev, "Failed to request IRQ: %d\n", ret);
 923                 return ret;
 924         }
 925
 926         /* Unmask AAD IRQs */
 927         memset(mask, 0, DA7219_AAD_IRQ_REG_MAX);
 928         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
 929                           &mask, DA7219_AAD_IRQ_REG_MAX);
 930
 931         return 0;
 932 }
 933 EXPORT_SYMBOL_GPL(da7219_aad_init);
 934
 935 void da7219_aad_exit(struct snd_soc_component *component)
 936 {
 937         struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component);
 938         struct da7219_aad_priv *da7219_aad = da7219->aad;
 939         u8 mask[DA7219_AAD_IRQ_REG_MAX];
 940
 941         /* Mask off AAD IRQs */
 942         memset(mask, DA7219_BYTE_MASK, DA7219_AAD_IRQ_REG_MAX);
 943         regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A,
 944                           mask, DA7219_AAD_IRQ_REG_MAX);
 945
 946         free_irq(da7219_aad->irq, da7219_aad);
 947
 948         cancel_work_sync(&da7219_aad->btn_det_work);
 949         cancel_work_sync(&da7219_aad->hptest_work);
 950 }
 951 EXPORT_SYMBOL_GPL(da7219_aad_exit);
 952
 953 /*
 954  * AAD related I2C probe handling
 955  */
 956
 957 int da7219_aad_probe(struct i2c_client *i2c)
 958 {
 959         struct da7219_priv *da7219 = i2c_get_clientdata(i2c);
 960         struct device *dev = &i2c->dev;
 961         struct da7219_aad_priv *da7219_aad;
 962
 963         da7219_aad = devm_kzalloc(dev, sizeof(*da7219_aad), GFP_KERNEL);
 964         if (!da7219_aad)
 965                 return -ENOMEM;
 966
 967         da7219->aad = da7219_aad;
 968
 969         /* Retrieve any DT/ACPI/platform data */
 970         if (da7219->pdata && !da7219->pdata->aad_pdata)
 971                 da7219->pdata->aad_pdata = da7219_aad_fw_to_pdata(dev);
 972
 973         return 0;
 974 }
 975 EXPORT_SYMBOL_GPL(da7219_aad_probe);
 976
 977 MODULE_DESCRIPTION("ASoC DA7219 AAD Driver");
 978 MODULE_AUTHOR("Adam Thomson <Adam.Thomson.Opensource@diasemi.com>");
 979 MODULE_LICENSE("GPL");